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Raymond Dedeyne's Photo Gallery

MUW-43JCalcite CaCO3

09617440015729881896165.jpg
Sanming, Fujian, China

Dimensions: 135 mm x 145 mm x 115 mm
Largest Crystal Size: 145 mm

thin (up to 2 mm thick) slightly pinkish hexagonal manganoan calcite platelets with sides up to 30 mm - perched in parallel packages on a large 145 mm white calcite scalenohedron
fluorescence with a Convoy UV/LW source: dull red for the core and vivid red for the thin platelets
collection Raymond Dedeyne (RCD3475 - 06/2019), ex a Chinese dealer at Sainte Marie
photo and copyright Theo Muller
Photo ID: 1010970     Uploaded by: Raymond Dedeyne   View Count: 22   Approval status: Public galleries    Type: Photo - 1500 x 1080 pixels (1.6 Mpix)

XGU-FTACalcite CaCO3

Multiple photos available
09257760015729869072321.jpg
Platosa Mine, Bermejillo, Mapimí Municipality, Durango, Mexico

Dimensions: 170 mm x 190 mm x 95 mm
Largest Crystal Size: 80 mm

stalagmitic calcite"fingers" up to 80 mm - cores and matrix are snow-white, sugar-like calcite whilst the outer surface is completely made of minute brownish calcite needles (see child photo)
both dilute HCl- and Meigen-tests clearly demonstrate this specimen to be built completely from calcite - NOT gypsum or aragonite
beige fluorescence with UV/LW (Convoy source)
collection Raymond Dedeyne (RCD0663 - 04/2002), ex Jan Andries
photo and copyright Theo Muller
Photo ID: 1010967     Uploaded by: Raymond Dedeyne   View Count: 11   Approval status: Public galleries    Type: Photo - 1080 x 1080 pixels (1.2 Mpix)

DY5-YW2Calcite CaCO3 , Dolomite CaMg(CO3)2

00949180015728162867229.jpg
Kipushi, Haut-Katanga, DR Congo

Dimensions: 100 mm x 85 mm x 70 mm
Largest Crystal Size: 50 mm

slender prismatic calcite crystals up to 50 mm with acute skalenohedric terminations - together with small rhombohedric dolomite crystals of about 1 mm
collection Raymond Dedeyne (RCD3115 - 05/2016), ex Rik Dillen, ex the Joseph Lhoest collection
Lhoest dubbed this the "calcite frite" form (="resembling French fries")
photo and copyright Theo Muller
Photo ID: 1010791     Uploaded by: Raymond Dedeyne   View Count: 5   Approval status: Public galleries    Type: Photo - 1080 x 1080 pixels (1.2 Mpix)

NL4-AKUCalcite CaCO3 , Quartz SiO2

02548620015728162866478.jpg
Rio Grande do Sul, Brazil

Dimensions: 120 mm x 95 mm x 40 mm
Largest Crystal Size: 40 mm

slender, acute skalenohedric calcite crystals up to 40 mm on a quartz ("fleur d'améthiste" type) matrix
strong red fluorescence with UV/LW (Convoy source)
collection Raymond Dedeyne (RCD0904 - 03/2003), ex Armand Stilmant at the Ghent Nautilus minerals fair
photo and copyright Theo Muller
Photo ID: 1010790     Uploaded by: Raymond Dedeyne   View Count: 10   Approval status: Public galleries    Type: Photo - 1080 x 1080 pixels (1.2 Mpix)

Y82-N9LRhodochrosite MnCO3

03725550015728162861471.jpg
Morococha District, Yauli Province, Junín, Peru

Dimensions: 80 mm x 90 mm x 40 mm
Largest Crystal Size: 20 mm

pink calcite rhombohedrons up to 20 mm side
collection Raymond Dedeyne (RCD0787 - 11/2002), ex Karel Van Gool at the ACAM minerals fair
photo and copyright Theo Muller
Photo ID: 1010788     Uploaded by: Raymond Dedeyne   View Count: 35   Approval status: Public galleries    Type: Photo - 1500 x 1080 pixels (1.6 Mpix)

7W1-10YCalcite (Var: Cobaltoan Calcite) (Ca,Co)CO3

02659810015728136966178.jpg
Bou Azzer mining district, Drâa-Tafilalet Region, Morocco

Dimensions: 105 mm x 70 mm x 35 mm
Largest Crystal Size: 5 mm

pink calcite prisms with rhombohedric terminations of about 5 mm
strong red fluorescence with UV/LW (Convoy source), which is rather exceptional as cobalt usually acts as a fluorescence quencher
collection Raymond Dedeyne (RCD2566 - 06/2013), ex a Moroccan dealer at Sainte Marie
photo and copyright Theo Muller
Photo ID: 1010787     Uploaded by: Raymond Dedeyne   View Count: 6   Approval status: Public galleries    Type: Photo - 1920 x 1080 pixels (2.1 Mpix)

U0R-U8LStilbite-Ca NaCa4[Al9Si27O72]·nH2O , Fluorite CaF2

Multiple photos available
00950870015724685907971.jpg
Xiefang Mine, Ruijin Co., Ganzhou, Jiangxi, China

Dimensions: 195 mm x 150 mm x 135 mm
Largest Crystal Size: 5 mm

a large specimen with small snowwhite crystals of stilbite-Ca up to 5 mm (see child photo for details) on a matrix of green fluorite octahedrons with an inner core of violet fluorite
the fluorite surface is rough - consistent with Xiefang fluorite
the stilbite-Ca determination is supported by crystal morphology, density and refractive indices
collection Raymond Dedeyne (RCD3465 - 06/2019), ex Jin Ge Zi Rockshop at Sainte Marie
photo and copyright Theo Muller
Photo ID: 1009737     Uploaded by: Raymond Dedeyne   View Count: 6   Approval status: Public galleries    Type: Photo - 1500 x 1080 pixels (1.6 Mpix)

77H-JTMChrysocolla Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O

Multiple photos available
01888890015724669183243.jpg
L'Etoile du Congo Mine, Lubumbashi, Haut-Katanga, DR Congo

Dimensions: 95 mm x 105 mm x 50 mm

two generations of chrysocolla: a blue one (at the inside - see child photo) and a greenish-blue one at the surface of a stalactitic structure
an old specimen from around 1910 - 1920, when it was collected by a Belgian mine engineer
collection Raymond Dedeyne (RCD3415 - 08/2018), ex Francis Coune at the Bernissart minerals fair
photo and copyright Theo Muller
Photo ID: 1009727     Uploaded by: Raymond Dedeyne   View Count: 5   Approval status: Public galleries    Type: Photo - 1080 x 1080 pixels (1.2 Mpix)

Q11-N5RCalcite CaCO3

03849940015724669188513.jpg
Sifnos Island, Sifnos, Milos, South Aegean, Greece

Dimensions: 65 mm x 25 mm x 125 mm

yellowish-white calcite stalactite of 125 mm with small rhombohedrons on the surface
the Meigen test demonstrates that both surface and inner core are calcite (and NOT aragonite)
strong white fluorescence with UV/LW (Convoy source)
collection Raymond Dedeyne (RCD3021 - 08/2015), ex the Albert Vercammen collection (AV106)
photo and copyright Theo Muller
Photo ID: 1009716     Uploaded by: Raymond Dedeyne   View Count: 5   Approval status: Public galleries    Type: Photo - 1080 x 1080 pixels (1.2 Mpix)

JXV-P9NDolomite CaMg(CO3)2

01775010015724651613259.jpg
Eugui, Esteríbar, Navarre, Spain

Dimensions: 80 mm x 70 mm x 50 mm
Largest Crystal Size: 60 mm

well defined, water white twinned dolomite rhombohedrons up to 60 mm side
collection Raymond Dedeyne (RCD2727 - 06/2014), ex Geoda at Sainte Marie
photo and copyright Theo Muller
Photo ID: 1009697     Uploaded by: Raymond Dedeyne   View Count: 3   Approval status: Public galleries    Type: Photo - 1080 x 1080 pixels (1.2 Mpix)
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